About

David Holman

Hello and thank you for visiting VoiceCerts.com!

I am a consulting systems engineer with over 20 years of varied experiences with voice, route/switch, wireless and data center technologies.  My comments and actions on this website and social media are my own and not representative of present or past employers.


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About Me

You can see my full LinkedIn profile above if you are really interested, but over the years I've had a variety of network and telephony experience with products by companies such as Cisco, Lucent, Avaya, Microsoft, Adtran, Nortel, etc.

I originally started this blog several years ago as a way to easily keep track of efforts to study for Cisco's CCIE Voice exam.  I figured that if I found something I knew that I'd need to use again later - I could find it on my blog.  As it turns out, there are a few other people that can use it as well and it's turned into what you find today.

Am I a CCIE?  No.  I've passed the CCIE Voice written a couple of times along the way.   However, I've taken one attempt at the CCIE Voice lab and failed - but that was a great learning experience and really clarified how to prepare for it.  It's not out of reach, but it does take dedication and commitment.  I currently hold the CCNP Collaboration certification and a variety of related specializations.

I try my best to use what I learn along the way to enhance this Cisco voice certification blog with information that will most benefit CCNA Voice, CCNP Voice and CCIE Voice (CCIE Collaboration) students.

Standard Disclaimer

Since I administer the VoiceCerts.com blog on my own time; please know that all opinions are my own and not that of my employer.  I also make attempts to attribute any material that I publish that is not my own.

VoiceCerts.com is a free Cisco voice blog intended to aid students prepare for Cisco's CCNA certification, Cisco's CCNA Voice certification, Cisco's CCVP certification, Cisco's CCNP Voice certification, Cisco's CCIE Voice certification and more recently, Cisco's CCIE Collaboration. The material provided can be used to supplement and build effective CCNA Voice study guides, CCNP Voice study guides and even CCIE Voice study guides.

In all cases where resources on the Internet are used to illustrate a concept, attribution to the original source(s) are provided. Cisco®, Cisco Systems®, Cisco Unity®, Cisco TelePresence®, Cisco Press®, CCIE™, CCNP®, CCNA®, Cius™, Cisco Unified Computing System™, and Cisco Nexus® are trademarks of Cisco Systems.

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